scholarly journals Online correction of respiratory-induced field disturbances for continuous MR-thermometry in the breast

2009 ◽  
Vol 61 (6) ◽  
pp. 1494-1499 ◽  
Author(s):  
S. Hey ◽  
G. Maclair ◽  
B. D. de Senneville ◽  
M. Lepetit-Coiffe ◽  
Y. Berber ◽  
...  
Keyword(s):  
Mr Thermometry ◽  
Online Correction ◽  
Induced Field

Evidence for the online correction of saccades from the eye movements of an individual with a scotoma

2009 ◽  
Author(s):  
Timothy N. Welsh ◽  
Sanjay Chandrasekharan
Keyword(s):  
Eye Movements ◽  
Online Correction

scholarly journals Optically Induced Field-Emission Source Based on Aligned Vertical Carbon Nanotube Arrays

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1810
Author(s):  
Mengjie Li ◽  
Qilong Wang ◽  
Ji Xu ◽  
Jian Zhang ◽  
Zhiyang Qi ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electric Field ◽  
Field Emission ◽  
Field Enhancement ◽  
Absorption Efficiency ◽  
Photon Absorption ◽  
Nanotube Arrays ◽  
Carbon Nanotube Arrays ◽  
Induced Field ◽  
Optically Induced

Due to the high field enhancement factor and photon-absorption efficiency, carbon nanotubes (CNTs) have been widely used in optically induced field-emission as a cathode. Here, we report vertical carbon nanotube arrays (VCNTAs) that performed as high-density electron sources. A combination of high applied electric field and laser illumination made it possible to modulate the emission with laser pulses. When the bias electric field and laser power density increased, the emission process is sensitive to a power law of the laser intensity, which supports the emission mechanism of optically induced field emission followed by over-the-barrier emission. Furthermore, we determine a polarization dependence that exhibits a cosine behavior, which verifies the high possibility of optically induced field emission.

MR thermometry-based feedback control of efficacy and safety in minimum-time thermal therapies: Phantom andin-vivoevaluations

2006 ◽  
Vol 22 (1) ◽  
pp. 29-42 ◽  
Author(s):  
Dhiraj Arora ◽  
Daniel Cooley ◽  
Trent Perry ◽  
Junyu Guo ◽  
Andrew Richardson ◽  
...  
Keyword(s):  
Feedback Control ◽  
Minimum Time ◽  
Efficacy And Safety ◽  
Mr Thermometry ◽  
Thermal Therapies

scholarly journals Toward Volumetric MR Thermometry With the MASTER Sequence

2015 ◽  
Vol 34 (1) ◽  
pp. 148-155 ◽  
Author(s):  
Michael Marx ◽  
Juan Plata ◽  
Kim Butts Pauly
Keyword(s):  
Mr Thermometry

scholarly journals Temperature-induced tissue susceptibility changes lead to significant temperature errors in PRFS-based MR thermometry during thermal interventions

2010 ◽  
Vol 64 (5) ◽  
pp. 1360-1372 ◽  
Author(s):  
Sara M. Sprinkhuizen ◽  
Maurits K. Konings ◽  
Martijn J. van der Bom ◽  
Max A. Viergever ◽  
Chris J. G. Bakker ◽  
...  
Keyword(s):  
Mr Thermometry ◽  
Significant Temperature ◽  
Temperature Errors

scholarly journals Interactions of Ruddlesden-Popper Phases and Migration-Induced Field-Stabilized Polar Phase in Strontium Titanate

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 693
Author(s):  
Christian Ludt ◽  
Elena Ovchinnikova ◽  
Anton Kulikov ◽  
Dmitri Novikov ◽  
Sibylle Gemming ◽  
...  
Keyword(s):  
Strontium Titanate ◽  
Density Functional ◽  
Surface Region ◽  
Point Of View ◽  
Polar Phase ◽  
Near Surface ◽  
Atomic Displacements ◽  
Induced Field ◽  
And Migration ◽  
Novel Concept

This work focuses on the validation of a possible connection of the known Ruddlesden-Popper (RP) phases and the novel concept of the migration-induced field-stabilized polar (MFP) phase. To study this subject, model structures of RP phases in bulk strontium titanate are analyzed by means of density functional theory (DFT). The obtained geometries are compared to experimental MFP data. Good agreement can be found concerning atomic displacements in the pm range and lattice strain inferred by the RP phases. Looking at the energy point of view, the defect structures are on the convex hull of the Gibb’s free energy. Although the dynamics to form the discussed defect models are not addressed in detail, the interplay and stability of the described defect model will add to the possible structure scenarios within the near-surface region of strontium titanate. As a result, it can be suggested that RP phases generally favor the MFP formation.

Plasma‐induced field emission and the characteristics of high‐current relativistic electron flow

1974 ◽  
Vol 45 (6) ◽  
pp. 2463-2479 ◽  
Author(s):  
R. K. Parker ◽  
Richard E. Anderson ◽  
Charles V. Duncan
Keyword(s):  
Relativistic Electron ◽  
Field Emission ◽  
Electron Flow ◽  
High Current ◽  
Induced Field

Five picocoulomb electron bunch generation by ultrafast laser-induced field emission from metallic nano-tip arrays

2011 ◽  
Vol 99 (10) ◽  
pp. 103504 ◽  
Author(s):  
Anna Mustonen ◽  
Paul Beaud ◽  
Eugenie Kirk ◽  
Thomas Feurer ◽  
Soichiro Tsujino
Keyword(s):  
Field Emission ◽  
Electron Bunch ◽  
Ultrafast Laser ◽  
Induced Field

PH-0488: Online correction for geometric fidelity in MR-Linac treatments

2020 ◽  
Vol 152 ◽  
pp. S275
Author(s):  
L. Meijers ◽  
M.L.E.E.P. Philippens ◽  
A. Lier van ◽  
B. Stemkens ◽  
R.H.N. Tijssen
Keyword(s):  
Online Correction
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